<template>
  <div class="container">
    <div class="box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 表单区域 -->
      <el-form ref="form" :model="form" :rules="rules" class="form">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input prefix-icon="el-icon-user" v-model="form.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="el-icon-lock"
            v-model="form.password"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="onSubmit">登录</el-button>
          <el-button type="info" @click="reset">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      form: {
        username: "admin",
        password: "123456",
      },
      rules: {
        username: [
          { required: true, message: "请输入登录名称", trigger: "blur" },
          { min: 3, max: 10, message: "长度在 3 到 10 个字符", trigger: "blur" },
        ],
        password: [
          { required: true, message: "请输入登录密码", trigger: "blur" },
          { min: 6, message: "密码长度不能小于 6 个字符", trigger: "blur" },
          { max: 15, message: "密码长度不能大于于 15 个字符", trigger: "blur" },
        ],
      },
    };
  },
  methods: {
    // 提交
    onSubmit() {
      this.$refs.form.validate(async valid => {
        if(!valid) return;
        const {data: res} = await this.$http.post('login', this.form);
        if (res.meta.status !== 200) return this.$message.error('登陆失败！');
        this.$message({
          message: '登录成功！',
          type: 'success'
        });
        window.sessionStorage.setItem('token', res.data.token);
        this.$router.push('/home')
      });
    },
    // 重置
    reset() {
      this.$refs.form.resetFields();
    },
  },
};
</script>

<style lang="less" scoped>
.container {
  height: 100%;
  background-color: #2b4b6b;
}

.box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
